Bookbinder&#39;s press board



May 23, 1933. J w DUFFY 1,911,110

BOOKBINDERS PRESS BOARD Filed June 17, 1932 KI E 15,,- i

Patented May 23, 1933 UNITED STATES JAMES W. DUFFY, OF HAYWOOD, ILLINOIS BOOKBINIDERS PRESS BOARD Application filed June 1'7,

This invention relates to a book binders press board and has for its primary object the provision of a press board of improved and sturdier construction. Specific objects and advantages will appear as the specification proceeds.

The invention is fully described in the following specification and shown in the accompanying drawing, in which:

Figure 1 is a plan view of a press board embodying my invention, books being shown in the illustration applied to the binding or joint-forming edge of the board; Fig. 2, a broken perspective view of one corner of the board; F 3, a broken perspective view similar to F 2 showing the binding strips removed from the board; Fig. 4, a broken perspective view of one end of the binding strip; Fig. 5, a broken perspective view of the end of a binding strip which, in position upon the board, would lie adjacent the end shown in Fig. 4; Fig. 6, a transverse sectional view, the section being taken as indicated at line 6 of Fig. 2; Fig. 7 a broken perspective view of a corner of the board equipped with another form of binding strip; Fig. 8, a brokenaway plan view of another corner of the board shown in Fig. 7, showing the binding strip bent at right angles around the corner of the board; and Fig. 9, an enlarged sectional view, the section being taken as indicated at line 9 of Fig. 7.

In the illustration given, A represents the press board; B represents the binding strip applied to the side of the board; and C represents books applied to the binding edge of the strip B so as to form hinge joints upon the books.

The press board A may be of any suitable construction and formed of wood or other suitable material. In accordance with my invention, the sides of the board, as illustrated in Fig. 3, are provided with grooves 10 which run the length and width of the board.

The binding strip B, in accordance with my invent-ion, is equipped on its rear side with an integral extension or tongue 11 which is adapted to engage groove 10. The strips are provided with openings 12 through the body of the strip and also through the tongue 1932. Serial No. 617,905.

which serves to receive and house the heads of 55 screws as well as the corner reinforcing strips 14. As shown more clearly in Fig. 2, the reinforcing corner strip 14 fits snugly within the recess 13 and the edges thereof are protected by the forwardly projecting 60 flanges 15.

The strips B, of the form illustrated in Figs. 2, 4, 5 and 6, are preferably applied one strip on each side of the board and the 1 corners secured together as shown in Fig. 2. In Figs. 4 and 5, the tongue on one strip is shown extending the full length of the strip while the tongue on the acent strip is cut away near the end toprovide room for the first-mentioned tongue.

In the form of binding strip illustrated in Figs. 7, 8 and 9, a single strip of metal 16 equipped with rear extension or tongue 17 is employed, the tongue engaging the groove 10 or" the press board. lVith this form of binding strip, it is possible to dispense with some of the corner reinforcing strips 14. For example, the tongue of a strip may be mitered as indicated at 18 in Fig. 8 and the strip body 16 bent so as to form a right angle turn. Thus, if desired, the binding strip may be extended about four sides of the press board, the free ends at the one corner beingsecured together by strips 14, as illustrated in F 7.

The binding strips may be formed to extend any desired distance above or below the plane of the press board A, and the width of the top or bottom edges may be varied to give the desired type of binge joints.

In the operation of the board, a number of books, as illustrated in Fig. 1, are placed upon the press board so that the bound side of the book extends slightly over the hingeforming edge of the binding strip. Usually a number of wards are placed, together with heir load of books, one upon the other in a large press, the pressure applied to the successive layers of boards and books serving to form a hinge joint in the covers of the books along their bound sides.

Heretofore, it has been customary to fasten the binding strips to the sides of the press 5 board by means of screws. Under the pressure exerted in the press, the screws tend to loosen because the thrust of the pressure is directly upon them. hen the press boards are drawn along the floor, as is customary, the loosened screws tend to fall out. Also, the yielding of the screws tends to misalign the binding edges with the sides of the board. \Vith my improved press board, the thrust is transmitted directly to the wood of the board by the tongue-equipped binding strips.

Also, the binding strips are automatically positioned accurately upon the board by means of the interlocking tongues and grooves. By means of the recess provided in one form of 2 the binding strip, the screws are protected when the strip is slid along the floor and also the reinforcing corner strips are snugly housed within the recess. lVith the construction illustrated in Fig. 2, the two adjacent 2 strips are held in accurate alignment by the engagement 01 the sides of the corner strip 14 with the flanges l5.

\Vhile in the illustrations given, two forms of binding strips have been shown, it will 0 he understood that my invention may be employed with other forms and that the dimensions, shapes, etc., may be modified without departing from the spirit of my invention.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed. as broadly as permissible, in view of the prior art. *0 I claim:

1. A book binders press board comprising a board having its sides equipped with longitudinal grooves, metal binding strips having integrally formed therewith tongues engaging said grooves, said binding strips having a centrally recessed front surface, reinforcing corner strips extending about the corners of said binding strips and engaging said recessed front surface, and means for securing said corner strips to said binding strips and said board.

2. A book binders press board comprising a board having its sides provided with longitudinal grooves, abinding strip extending about a plurality of the sides of said board and being provided with tongues integrally formed therewith engaging said grooves, said tongues being mitered at the points where they extend about the corners of said board.

JAMES 3V. DUFFY. 

